電針調控脊髓損傷后大鼠巨噬細胞表型對炎癥反應的影響
[Abstract]:Background: spinal cord injury is a serious traumatic disease with high disability rate and mortality. There is still no accurate and effective treatment for spinal cord injury. Therefore, spinal cord injury is a hot spot in basic medicine and clinical medicine. Spinal cord injury is divided into primary injury and secondary injury. The pathophysiological mechanism of secondary injury is complex and the spinal cord injury is serious. Macrophages and microglia are important effector cells in spinal cord injury. M1 macrophages can enhance the innate immune response in vivo to remove external microorganisms and damaged tissue fragments at the injured site. M2 macrophages have the characteristics of tissue repair and reducing the production of inflammatory factors. After spinal cord injury, du Mai EA can inhibit the inflammatory response by regulating the proportion of M1/M2 macrophages in the injured site, and neurotrophic factor-3 (NT-3) is likely to be involved in this process. Acupuncture stimulation at Dumai acupoint can be used as an auxiliary treatment after spinal cord injury. Aim: to observe the effect of EA on inflammatory response in rats with spinal cord injury (sci) and to explore its mechanism. Methods: sixteen SD rats were severed in T 10 spinal cord segment to establish the animal model of spinal cord injury. The other 8 rats served as the control group. Ten surviving rats were divided into two groups with 5 rats in each group. Spinal cord injury rats in (SCI) group did not receive any treatment after spinal cord transection, and rats in spinal cord injury plus electro-acupuncture (SCI EA) group were stimulated by electro-acupuncture at GV6,GV9 of spinal cord injury. We used BBB score to evaluate the effect of acupuncture on functional improvement in rats, and detected the expression of tumor necrosis factor-偽 (tumour necrosis factor- 偽 (TNF- 偽), interleukin-1 尾 (IL-1 尾), IL-6 (interleukin-6,IL-6) and IL-10 (interleukin-10,IL-10). The proportion of M1/M2 macrophages was counted and the possible mechanism was further discussed. Results: EA increased the BBB score of spinal cord injury rats, down-regulated the expression of M1 marker CD86, decreased the proportion of M1 macrophages, and down-regulated the levels of TNF- 偽, IL-1 尾 and IL-6. On the contrary, EA up-regulated the expression of M2 marker CD206, increased the proportion of M2, upregulated the level of anti-inflammatory factor IL-10, and promoted the expression of neurotrophic factor-3 (NT-3). Conclusion: EA stimulation has a positive effect on the functional recovery of spinal cord injury rats, which may be related to the neuroprotective effect of locally upregulated NT-3, while NT-3 may play a role by up-regulating the proportion of M2 macrophages.
【學位授予單位】:安徽醫(yī)科大學
【學位級別】:博士
【學位授予年份】:2017
【分類號】:R651.2
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